significantly improve latency

src/types/capture.ts

@@ -0,0 +1,29 @@
+export type CaptureMode = 'system' | 'device'
+
+export type CaptureBackendPolicy = 'auto' | 'native' | 'electron'
+
+export type CaptureBackendKind =
+  | 'electron-system'
+  | 'electron-device'
+  | 'native-macos'
+  | 'native-windows'
+  | 'native-linux'
+
+export interface CaptureSourceDescriptor {
+  id: string
+  label: string
+  kind: CaptureMode
+}
+
+export interface CaptureBackendSupportEntry {
+  kind: CaptureBackendKind
+  available: boolean
+  reason: string | null
+}
+
+export interface CaptureBackendSupport {
+  policyOptions: CaptureBackendPolicy[]
+  nativeBackend: CaptureBackendSupportEntry
+  electronSystem: CaptureBackendSupportEntry
+  electronDevice: CaptureBackendSupportEntry
+}